I take as many pictures as a Japanese tourist which helps me keep track of where I went and what I did.
What I find effective for me is uploading those pictures (usually daily) to an album on Facebook and writing captions for them. That accomplishes a few things.
It lets my friends and family know what I'm doing, that I'm safe and lets them know where I am.
The captions also help me search and find pictures easily from years ago. Like recently, I needed to dig up some pictures of a certain person for a celebration of life slide show. And earlier today when we were trying to remember when I went shooting pistols with my father - was that 2015, or 2018? Within seconds I knew the answer.
I've also had the lucky by-product that friends will see it and sometimes I find out that they're close by and we can meet up. Funniest one was when I was living in California and a friend was living in Dubai. I posted on FB that I was at a Houston Astros game and it turns out, so was he. So we were able to meet up and chat for a few minutes before we headed back to our different parts of the world.
Now for something like my 2025 trip back home to Saudi Arabia, I wrote most of that on TexAgs - after writing it to a flat text file without formatting. But, I enjoy sitting down with a full keyboard and typing stuff out. Trying to do anything of substance on a small screen with a glass keyboard drives me nuts.
And there are plenty of pictures and experiences that I just keep to myself. Nobody wants to hear about the guy at the hotel in Medellin who was there for a Caterpillar business meeting telling me about how great this Aguila beer from Barranquilla was and that it is the official beer of the Colombian soccer team and therefore I must try it.